Guitar chords in the key of G# or Ab:
Ab Bbm Cm C# Eb Fm Gdim

Chord Ab7 notes: Eb, Ab, C and Gb. You must leave out the 6th and 5th strings.

This chord is played by placing a barre on fret one with your index finger.

Ab(G#) dominant 7th chord's alternative names: Abdom7, (Ab septim).

Steps: 1-3-5-b7.
1(G#/Ab), 3(C), 5(D#/Eb), b7(F#/Gb).